Change Comparator.results to Comparator.comps

[alecraso]

Both before and after a Comparator runs its comparisons, calling Comparator.comps should return the list of comps assigned to the Comparator instance.

Now:

>>> c = cpt.Comparator(l, r, query, comps=[LEN_COMP, FIRST_COMP])
>>> c.results
[]
>>> c.run_comparisons()
[('len_comp', True), ('first_comp', False)]

Desired:

>>> c = cpt.Comparator(l, r, query, comps=[LEN_COMP, FIRST_COMP])
>>> c.comps
[('len_comp', None), ('first_comp', None)]
>>> c.run_comparisons()
[('len_comp', True), ('first_comp', False)]